Forum Discussion
Renumbering networks and F5 Load Balancers
So our company got aquired a while back. And as life goes all our RFC 1918 IP space use conflicts with our new Overlords. So we have to renumber everything. Our production F5 currently have 783 entries for nodes, virtual servers, rules and selfIPs which need to change.
A mass update would be nice were we could stop both load balancers in the HA setup, manual edit the config files and reboot. But the last time we tried this, it did not work very well due to the HA.
Business is also asking to reprogram only portions at a time, so a mass update is unfortunatly out.
So now I am looking at suggestions how to do this. I could try and throw something together with perl/expect which uses ssh and tmsh. How about using perl SOAP? Suggestions?
- johnsEmployeeAre you making any changes to the physical connections or the VLAN information? Not sure what version you have, but you can always make a separate file with just a part of the list and use "b merge" commands to add (instead of removing) it to the bigip.conf on a standby unit, failover to it, then make sure everything works ok, and config sycn. Then you can delete the appropriate section.
- Ulf_Zimmermann_NimbostratusIt looked like the mass edit didn't work because HA kicked in and synced the config by itself even I swear it should be doing it.
- johnsEmployeeUnless it is a GTM, it should not be syncing automatically. If it reboots, then it loads from the bigip.conf. If you want to make sure, then just take one of the units offline (put it in maintenance mode, powered off, off the network, etc) and make the mass change and load it manually during maintenance window.
- Ulf_Zimmermann_NimbostratusAgain at this point it doesn't matter as I can't do the mass update, I will have to do the changes one environment at a time without reboot.
- Nathan_Houck_65NimbostratusWhat version are you running? and are you using Hardware Failover or Network Failover?
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